Caterpillar® 3520 engine parts are available brand new, used or reconditioned, rebuilt and remanufactured. We stock all CAT® 3520 engine parts including 3520 engine kits, 3520 engine blocks (used), 3520 crankshafts, 3520 cylinder heads, etc. We can build these engines to suit all serial numbers for short engines, long engines and complete engines. All CAT® parts are available to Customers in Australia, Africa, Asia, Canada, Europe, Russia, South America, United Kingdom, United States and Worldwide. Contact us today.